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M4 Traffic.co.uk

Latest M4 Traffic News, Updates & Roadworks

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M4 Traffic

Latest M4 Traffic News Now

0Accidentsnone reported on the M4 that we are aware of1Roadworks activelive on the M4 right now — see details11Plannedscheduled on the M4 — see details

Live M4 traffic data from National Highways · updated 15:27 Wed 23 Sept 2026

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Search M4 Traffic.co.uk

Welcome to the M4 traffic search news page.

Helping you find the latest M4 traffic news and updates.

We hope that the traffic news will help you avoid traffic jams and roadworks.

Our traffic news is designed to provide you with traffic news in a clear and informative way.

You can use the filter options below to find the latest traffic news for the M4 journey you are planning to take.

21 matching items - showing 1-10 of 21 total available news items

  • Hardshoulder closure

    Active nowRoadworksEastbound
    Time now: Wednesday, 23 September 2026, 15:27

    15:0923 Sept 2026reported 18 min ago

    Location
    M4 eastbound between J17 and J16
    Direction
    Eastbound
    Lanes closed
    Hard shoulder closed
    Reason
    Roadworks
    Schedule
    23:59 Tue 27 Apr 2021 → 18:00 Fri 30 July 2027
    ⏳Long-term works - HA planned end: 18:00 Fri 30 July 2027.

  • M4 eastbound between J5 and J4B

    On the signals now40 mph limitEastboundBetween J5 & J4B
    Time now: Wednesday, 23 September 2026, 15:27

    15:1923 Sept 2026set 7 min ago✓ Checked by us 15:27

    WhereM4 eastbound, Between J5 & J4B · on 3 signals
    SinceSet 15:19 Wed 23 Sept 2026
    We check these speed signals at least every five minutes. A number in a red ring is a mandatory speed limit; a number on its own is advisory. Always follow the signals you can see on the road.

  • M4 eastbound between J6 and J5

    On the signals now60 mph limitEastboundBetween J6 & J5
    Time now: Wednesday, 23 September 2026, 15:27

    15:1823 Sept 2026set 8 min ago✓ Checked by us 15:27

    WhereM4 eastbound, Between J6 & J5 · on 2 signals
    SinceSet 15:18 Wed 23 Sept 2026
    We check these speed signals at least every five minutes. A number in a red ring is a mandatory speed limit; a number on its own is advisory. Always follow the signals you can see on the road.

  • M4 J5 eastbound access

    On the signals now60 mph limitEastboundJ5 entry slip
    Time now: Wednesday, 23 September 2026, 15:27

    15:1823 Sept 2026set 8 min ago✓ Checked by us 15:27

    WhereM4 eastbound, J5 entry slip · on 1 signal
    SinceSet 15:18 Wed 23 Sept 2026
    We check these speed signals at least every five minutes. A number in a red ring is a mandatory speed limit; a number on its own is advisory. Always follow the signals you can see on the road.

  • M4 eastbound within J5

    On the signals now60 mph limitEastboundAt J5
    Time now: Wednesday, 23 September 2026, 15:27

    15:1823 Sept 2026set 8 min ago✓ Checked by us 15:27

    WhereM4 eastbound, At J5 · on 1 signal
    SinceSet 15:18 Wed 23 Sept 2026
    We check these speed signals at least every five minutes. A number in a red ring is a mandatory speed limit; a number on its own is advisory. Always follow the signals you can see on the road.

  • M4 eastbound between J4 and J3

    On the signals now40 mph limitEastboundBetween J4 & J3
    Time now: Wednesday, 23 September 2026, 15:27

    15:1723 Sept 2026set 9 min ago✓ Checked by us 15:27

    WhereM4 eastbound, Between J4 & J3 · on 3 signals
    SinceSet 15:17 Wed 23 Sept 2026
    We check these speed signals at least every five minutes. A number in a red ring is a mandatory speed limit; a number on its own is advisory. Always follow the signals you can see on the road.

  • M4 eastbound within J4

    On the signals now60 mph limitEastboundAt J4
    Time now: Wednesday, 23 September 2026, 15:27

    15:1723 Sept 2026set 9 min ago✓ Checked by us 15:27

    WhereM4 eastbound, At J4 · on 1 signal
    SinceSet 15:17 Wed 23 Sept 2026
    We check these speed signals at least every five minutes. A number in a red ring is a mandatory speed limit; a number on its own is advisory. Always follow the signals you can see on the road.

  • connector at M4 J4/M4 spur (Heathrow)

    On the signals now60 mph limitEastbound
    Time now: Wednesday, 23 September 2026, 15:27

    15:1723 Sept 2026set 9 min ago✓ Checked by us 15:27

    WhereM4 eastbound · on 1 signal
    SinceSet 15:17 Wed 23 Sept 2026
    We check these speed signals at least every five minutes. A number in a red ring is a mandatory speed limit; a number on its own is advisory. Always follow the signals you can see on the road.

  • M4 westbound between J7 and J8

    On the signals now60 mph limitWestboundBetween J7 & J8
    Time now: Wednesday, 23 September 2026, 15:27

    15:1523 Sept 2026set 11 min ago✓ Checked by us 15:27

    WhereM4 westbound, Between J7 & J8 · on 2 signals
    SinceSet 15:15 Wed 23 Sept 2026
    We check these speed signals at least every five minutes. A number in a red ring is a mandatory speed limit; a number on its own is advisory. Always follow the signals you can see on the road.

  • M4 westbound between J7 and J8

    On the signals now40 mph limitWestboundBetween J7 & J8
    Time now: Wednesday, 23 September 2026, 15:27

    15:1523 Sept 2026set 11 min ago✓ Checked by us 15:27

    WhereM4 westbound, Between J7 & J8 · on 2 signals
    SinceSet 15:15 Wed 23 Sept 2026
    We check these speed signals at least every five minutes. A number in a red ring is a mandatory speed limit; a number on its own is advisory. Always follow the signals you can see on the road.

    • Updated 15:27 Wed 23 Sept 2026

    Powered by National Highways’ Transport Data Feeds.

    How to find the latest M4 traffic news

    Our live M4 feed updates throughout the day with the latest reports on delays, roadworks, accidents, closures and congestion along the M4 motorway. Search by junction number and direction — eastbound or westbound — to focus on the stretch you’re travelling, whether that’s the M25 interchange at Junction 4b, the Severn crossing, the M5 at Almondsbury, or the run into Cardiff and Swansea. A quick check before you leave can save you sitting in avoidable traffic.

    Why M4 traffic news changes along the motorway

    The Department for Transport counts M4 traffic hour by hour and end to end. What it shows is that the latest M4 news means something different depending on where you are joining the motorway today.

    156,491

    M4 vehicles a day

    at the busiest point, junction 4 by Heathrow — the London commuter end of the M4, where 81% of the traffic is cars.

    128,594

    a day at Bristol

    on the M4 at the M4/M5 interchange — fewer vehicles, but 11,167 lorries and 24,926 vans. The same motorway, carrying a very different kind of traffic.

    32%

    the M4 rush-hour swing

    between the busiest M4 hour (7am) and the quietest (11am) at junction 4. The M4 has a genuine peak, so timing your journey actually helps here.

    81

    M4 count points

    measure this motorway from London to South Wales. It is one of the most closely watched roads in the country, and every M4 accident, delay and roadworks report we publish comes from that network.

    So an M4 delay at junction 4 and an M4 delay at junction 19 are not the same problem. That is why this page carries all the latest M4 traffic news together — accidents, crashes, roadworks and lane closures — so you can find the ones on your stretch of the M4 motorway today rather than reading about somebody else’s.

    Hourly figures are from the Department for Transport’s own M4 count point beside junction 4, counted on 3 September 2025, published 20 May 2026. Daily figures are Average Annual Daily Flow for 2025.

    M4traffic.co.uk is dedicated to the latest M4 traffic news, checked every five minutes, 24 hours a day. The M4 meets the M25 at Junction 4b near Heathrow and the M5 near Bristol — see M25 Traffic and M5 Traffic.